/Engine/Source/Runtime/Engine/Public/MaterialShared.h
Get theURuntimeVirtualTextureobject if one was used to initialize this stack.
void GetTextureValue ( const [FMaterialRenderContext](API\Runtime\Engine\FMaterialRenderContext) & Context, const [FUniformExpressionSet](API\Runtime\Engine\FUniformExpressionSet) & UniformExpressionSet, const [URuntimeVirtualTexture](API\Runtime\Engine\VT\URuntimeVirtualTexture) *& OutValue ) const